Hoisting-bucket mechanism.



No. 707,484. Patented Aug. l9, I902.

A. WIRSING.

HOISTING BUCKET MECHANISM.

(Application filed June 9, 1902.)

(N o M o d e].)

UNTTnn dTnTns PATENT OFF CE.

ANDREXV YVIRSING, OF MILWAUKEE, \VISCONSIN.

HOlSTlNG-BUC KET MECHANISM.

SPECIFICATION forming part of Letters Patent No. 707,484, dated August 19, 1902.

Application filed June 9, 1902. Serial No. 110,728. lNo model.)

To (LZZ w/wm it may concern.-

Be it known that 1, ANDREW Wrasme, a citizen of the United States, and a resident of Milwaukee, in the county of Milwaukee and State of .Wisconsin, have invented certain new and useful Improvements in Hoisting- Bucket Mechanism; and I do hereby declare that the following is a full, clear, and exact description thereof.

The improvements consist in certain peculiarities of construction and combination of parts, hereinafter particularly set forth with reference to the accompanying drawings and subsequently claimed, the object of the invention being to provide simple, economical, durable, and efficient separable hoistingbucket mechanism organized for utilization of a draft-cable as means for closing the bucket.

Figure 1 of the drawings represents a side elevation of a separable hoisting-bucket mechanism in accordance with my invention; Fig. 2, a plan View of the same, partly in horizontal section; Fig. 3, a plan view of a fragment of the mechanism inverted; and Fig. 4C, a detail elevation of a portion of said mechanism, partly in section, as indicated by line 4: 4 in the second figure.

Referring by letter to the drawings, A B indicate segmental sections of a separable hoisting-bucket that is half -round when closed. Made fast'inside of bucket-section A, partly parallel to the upper edges of same, are arms G, constituting cranks keyed or otherwise rigidly secured at their inner ends to a center spindle D, loose in sleeves E,

having outer end arms F, constituting cranks made fast inside of bucket-section B, partly parallel to the upper edges of same. The sleeves are also provided with inner end arms G, that radiate therefrom over the bucketsection A at an acute angle to the meetingline of both bucket-sections, and a two-arm bracket H is keyed or otherwise rigidly secured on spindle D, intermediate of said sleeves. The bracket-arms are radial to the spindle and extend over bucket-section B at an acute angle to the meeting-line of both bucket-sections. p

A pulleyI is hung between the parallel arms G of sleeves E. Another pulley J is hung between the parallel arms of bracket H, and

shoulders K L of said sleeve and bracket arms constitute stops that come into contact with one another to limit opening of the bucket, those of the bracket-arms being offset to face on the same circle as those of the sleeve-arms.

Link-rods M, in pivotal connection with the outer corners of the bucket-sections,are shown as having their upper ends loose on the extremities of an axle N of a central pulley P, hung in a shell Q, having upwardly-projecting central side ears R, connected by a pin S, to which a suspension cable T is joined. Other pulleys U V are hung in the shell Q, at ends of same, and a draft-cable W, made fast at one end in said shell, is shown trained against pulley U, under pulley I, up over pulley P, down under pulley J, and thence up against pulley V, said draft-cable being crossed between the two lower pulleys. However, it is practical to train the draft-cable from under pulley I, up over pulley Q, and down under pulley J without crossing or change of the result sought to be accomplished, or in order to provide for double purchase on the draft-cable the end thereof shown in connection with shell Q, may extend upward, as shown by dotted line in Fig. 1, to connect with the overhead carrier.

As herein shown, bucket-section A and bracket H rock with spindle D in one direction, and the sleeves E, having the arms F G, rock with bucket-section B in the opposite direction.

In practice suitable means are employed to wind and unwind the cables, so that the one T will be practically slack when there is draft on the one W employed for hoisting the bucket. The bucket being open and on descent its sections plunge into coal or other material to be elevated, and draft being exerted on cable W said bucket is closed and hoisted, with its contents, to the desired altitude, after which the suspension-cable is held and the draft-cable slacked to permit automatic opening of the aforesaid bucket vby gravity of said contents.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. A separable hoisting-bucket mechanism comprising a center spindle, crank-arms fast on the spindle, a bucket-section fast to said arms, sleeves loose on said spindle and having lower outer arms as well as inner upper arms, a bucket-section fast to the lower outer sleeve-arms, a bracket fast on the aforesaid spindle intermediate of said sleeves, an upper shell having central and end pulleys, link-rods connecting the outer corners of the bucket-sections with the shell central of the same, pulleys in suspension from the inner upper sleeve-arms and the spindle-bracket, a suspension-cable in connection with the aforesaid shell, and a draft-cable trained in contact with the several pulleys to control opening and closing of the bucket.

2. A separable hoisting-bucket mechanism comprising a center spindle, a bucket-section crank arms rigid with the spindle, other bucket-section crank-arms loose on said spindle, upper arms radiating in opposite directions from the spindle over bucket-sections and respectively fast and loose in their connection with said spindle, pulleys in suspension from these arms, an upper shell having central and end pulleys, link-rods connecting the outercorners of the bucket-sections with the shell central of the same, a suspensioncable in connection With the aforesaid shell, and a draft-cable trained in contact with the several pulleys to control opening and closing of the bucket.

3. A separable hoisting-bucket mechanism comprising a center spindle, a bucket-section crank-arms rigid with the spindle, other bucket-section crank-arms loose on said spindle, upper arms radiating in opposite directions from the spindle over bucket-sections and respectively fast and loose in their connection with said spindle, pulleys in suspension from these arms, an upper shell having central and end pulleys, link-rods connecting the outer corners of the bucket-sections with the shell central of the same, a suspensioncable in connection with the aforesaid shell, and a draft-cable that being also in connection with the shell is trained in contact with the several pulleys to control opening and closing of the bucket.

4. A separable hoisting-bucket mechanism comprising a center spindle, a bucket-section crank arms rigid with the spindle, other bucket-section crank-arms loose on said spindle, upper arms radiating in opposite directions from the spindle over bucket-sections and respectively fast and loose in their connection With said spindle, pulleys in suspension from these arms, an upper shell having central and end pulleys, link-rods connecting the outer corners of the bucket-sections with the shell central of the same, a suspensioncable in connection with the aforesaid shell, a draft-cable trained in contact with the several pulleys to control opening and closing of the bucket, and meeting stops on the arms that radiate in opposite directions over said bucket-sections. In testimony that I claim the foregoing I have hereunto set my hand, at Milwaukee, in the county of Milwaukee and State of Wisconsin, in the presence of two Witnesses.

ANDREW WIRSING.

Witnesses:

N. E. OLIPHANT, B. C. RoLoFF. 

